Lighter insert for pocket knives



FIG. 1 is a top view of a lighter insert for pocket knives showing my new design;

FIG. 2 is a bottom view thereof;

FIG. 3 is a side view thereof;

FIG. 4 is another side view thereof;

FIG. 5 is a perspective front view thereof; and,

FIG. 6 is a perspective rear view thereof. 

The ornamental design for a lighter insert for pocket knives, as shown and described. 